1). Frame: hard pressed extruded aluminium 6061 /t6 (15hw) which can last over 15 to 20 years. Easy to be assembled and dismantled, movable. 2). Fabric: high quality double pvc-coated polyester textile, 850g/sqm, 100% waterproof, flame retardant to din4102 b1, m2(european standard ), uv resistant, tear resistant, self-cleaning ability. 850g/sqm for roof cover, 650g/sqm for sidewall. 3).Connecter: strong hot-dip galvanized steel, zinc thickness over 80um. 1). No pole inside, 100% space is available; 2). 100% waterproof, proof, anti-fire, uv-protection, can be environmentally controlled in any climate; 3). Wind load: max. 100km/h, snow load: 75kg/sqm 4). Easy to be assembled and dismantled, removeable, multifunctional, durable. 5). Sizes can be customized (like side/leg height)